State Sen. Andy Kerr on Tuesday morning became the third Democrat to leave the 7th Congressional District race after U.S. Rep. Ed Perlmutter’s announcement Monday that he will run for re-election to Congress after all. Laura Chapin, a spokeswoman for Kerr, said he “will be suspending (his) campaign.” In a video posted to Facebook, Kerr threw his support behind Perlmutter. “There’s good reason to be excited about Ed’s decision to run for Congress again,” Kerr said.